Two people found dead inside a Sausalito residence after a flurry of gunfire were identified as the homeowner and his girlfriend, police said Monday.

Robyn Jay Chan, 51, and Mara Yvonne Truly, 41, were discovered inside 173 San Carlos Ave. about 2:45 a.m. Sunday after police received reports of gunshots in the area.

Neighbors told investigators that Truly had just moved in or was about to, and the couple threw a party Saturday night to introduce her to neighbors and friends.

A friend who was at the party Saturday night said the couple had been dating for some time and that Truly, a Sacramento resident, already spent a considerable amount of time at Chan’s home.

“He loves traveling and he and Mara were just really happy together,” said the friend, who declined to be named. “They were happy that night. … I was shocked when his sister emailed the next day.”

Sausalito police are investigating the deaths with assistance from the Marin County Sheriff’s Office, the coroner’s division and the Central Marin Police Authority.

Sausalito police Chief Jennifer Tejada declined to comment on the circumstances of the deaths pending autopsies, which are planned for Tuesday.

Tejada said police think the event was an isolated incident and that the public is not at risk of a killer at large.

The case would be the first homicide in the city of Sausalito since 2009, when Chet Turner killed his girlfriend, 46-year-old Avril Clary, at the apartment they shared on Bridgeway. Turner, who slashed the woman in the neck, pleaded guilty to manslaughter and took a 12-year prison sentence.

The homicide before that occurred in 1990, according to California Department of Justice records.